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Reply To: 2016 Sierra 8-Spd Issue

December 12, 2017 at 9:08 am #258845
t.johnson086
Participant

I bought a 17 Denali 6.2 w/ 8-spd in march of 17. I finally got around to taking to the dealer for a shifting issue from first to second gear (19k miles). If I was accelerating slowly it would shift very hard into second. It appeared as though the RPMs would go too high before shifting, then slam in to second. They replaced my transmission, and now I have a whole new set of problems. Its sluggish and hesitant between gear 1-3 or maybe 1-4 when accelerating, and sometimes clunks into first coming from second upon stopping. Needless to say I’m on the verge of trading it in.

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